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Citation Information: Advances in Geometry. Volume 7, Issue 3, Pages 357–373, ISSN (Online) 1615-7168, ISSN (Print) 1615-715X, DOI: 10.1515/ADVGEOM.2007.021, June 2007
Indicator sets arising from symplectic line-spreads of a 3-dimensional projective space are characterized. Moreover, locally Hermitian ovoids of a Hermitian surface 
(3, q
2) are studied in terms of “non-equivalent” associated indicator sets. Translation locally Hermitian ovoids of (3, q
2) arising from regular spreads of PG(3, q), Kantor semifield spreads of PG(3, q) and semifield spreads of PG(3, q) with center 
are also investigated.
Key words: Hermitian surface; symplectic spread; commuting polarities; ovoid; linear set
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